Paper-making machine.



W. E. NIETCALF.

PAPER MAKING MACHINE APPLICATION FILED MAR. 9, I9I5.

Patented Sept. 7', 1915.

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W. E. METCALF.

PAPER MAKlNG MACHINE APPLICATION FILED MAR.9.1915.

Patented Sept.

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PAPER-MAKING- MACHINE.

To all whom t may concern:

Be it known that I, WALTER E. MnToALr, a citizen of the United States ofAmerica, and a resident of Hudson Falls, county of Washington, State ofNew York, have invented certain vnew and useful Improve ments inPapel-Making Machines, of which the following is a full and clearspecification, reference being had to the accompany ing drawings, inwhich- Figure l is a side elevation of a sufficient number of parts ofa'Fourdrinier machine to illustrate the location of iny device; Fig. 2 aplan view thereof with the deckle pulley and slices removed and thedeckle strap in section; Figs. 3, el, 5 and G detail views of myattachment; and Fig. 7 a side elevation of a device embodying' amodification of my invention.

The object of this invention is to provide a very simple and inexpensiveattachment to Fourdrinier machines and Harper Fourdrinier machineswhereby crossing of the fibers of the paper web as the same is beingformed on the F ourdrinier wire is brought about, thereby producing apaper which shall have as great a degree of strength transversely aslongitudinally, which shall be of uniform thickness, which shall havevery desirable tearing and bending qualities, and which shall insurecertain valuable economies in the manufacture of the paper moreparticularly hereinafter set forth.

My attachment is affixed to the bottom of the apron a, down which thestock runs to the slices (not shown); that is to say, it is located inthe pond back of the slices.

In its preferred form, my attachment consists of a base plate b fastenedto the apron board or slice by means of suitable fasten ing devices c,which are preferably screws, so that my attachment may be bodilyadjusted closer to or farther from the slices. The base plate b runssubstantially nearly across the pond and attached to it and spaced fromit are two additional plates d and e, which are preferably parallel witheach other and with the base plate, and are substantially the same inlength therewith.

The plates b, d and e are rigidly fastened together by partitions thesepartitions consisting of narrow vertical plates having foot flangesriveted to the adjacent faces of the plates. The plates f are ofsubstantially the same width, so that when the parts are Specificationof Letters Patent.

Application filed March 9, 1915.

Patented Sept. 7, 1 915.

Serial No. 13,142.

assembled the plate d lies about midway between the plates and e and isrigidly supported. The lower set of partitions f are all inclined in onedirection, that is, obliquely to the flow of the paper stock, while theupper set of partitions are inclined in the opposite direction, the twosets of par titions lying preferably about at right angles to each otherand, therefore, at a angle to the line of flow of the stock. The platesd and e are about 6 to 3 wide, and the distance from vtop to bottom ofthe assembled device is about el, so that when theI device is aliixed tothe apron bottom, it will be completely immersed in the pond, the depthof the stock in the pond being sav about 5. f

It will be observed that as the stock flows through the numerousopen-ended channels formed by my device, that portion of the stockflowing through the upper set of channels will be deflected toward oneside edge of the Fourdrinier wire, while the stock that is flowingthrough the other set of channels will be deflected toward the oppositeedge of the wire, thus continuously7 producing. during the operation ofthe machine, two strata of fibers, the fibers of one stratum crossingthe fibers of the other stratum, this crossed relation of the fibersbeing maintained throughout the formation of the stock into a web. Thusproviding of means for insuring the crossing of the fibers by formingsuperposed cross-currents in the stock as it passes onto the wireresults in a number of very important advantages. It requires lessshaking of the wire to properly close the fibers in the web; it makes itpossible to run fibers in the stock very long, thereby preserving verydesirable tearing and bending qualities of the web; it has the effect ofclosing up the fibers in the paper web without using a dandy roll; ithas the effect of bulking the web, a characteristic very desirable insome kinds of paper, such as bag paper; it prevents the existence ofthick and thin streaks in the web of paper, thereby insuring a highdegree of tensile strength in all directions and also insuring evendrying of the web; it avoids the web sticking to the press rolls andthus facilitates the continuous running of the paper web withoutbreaking; and it causes the paper web to carry the water down to thefirst suction boxes, thereby eliminating the necessity of using -anabro'rmal amount of water in forming the We f Furthermore, my attachmentforms a sort ofscreen or guard which breaks up lumps of stuft passingonto the wire and thus causing theweb to break; and, again, the use ofmy device avoids the necessity. in fast running machines of elevatingthe breast roll to augment the speed of the stock as it runs downto theinclined Fourdrinier wire.

My invention also brings about other advantages which are unnecessary torecite.

A feature of importance in my device is its capacity to be adjustedbodily toward and from the slices, each adjusted position giving alittle diiferent effect to the web of paper.

It will be understood that the construction of my device may beconsiderably varied without departing from the spirit of the invention.For instance, I may do away with the top and bottom plates and use onlythe middle plate d, and provide this plate with a foot flange d at eachend for supporting it at a proper distance above the bottom board of thepond. In this modification, the deiecting blades will be supportedentirely by the plate d, although the lower `set may have their loweredges resting directly on the bottom4 of the pond.

It will be understood also that the deflectors may be arranged at anysuitable angle with respect to each other and the flow of the stock, andalso that some or all of the deiectors may be pivotally mounted so as tobe adjusted laterally to vary their inclination. In the drawing, I haveillustrated the two end delectors f in each series as being thuspivotally mounted, the pivots being designated by f2. To hold thesepivoted deliectors in their adjusted positions, I may employ a clampbolt f3, the

l plates a, and being suiciently iieiible t'of bring about a clampingaction of the deiiectors when the bolt is tightened up.

Having thus described my invention, what I claim is: y

1. In combination with' a Fourdrinier paper making machine, anattachment located in the pond back of the slices and provided withmeans for forming superposed cross-currents in the stock as itapproaches the slices, said attachment consisting of an upper `and alower series of delectors and means for supporting them, the lower setof deiiectors being arranged at an angle to the deiectors of the upperset.

2. In combination with a Fourdrinier paper making `machine, anattachment mounted in the pond back of the slices and extending entirelyacross the same and consisting of a plurality of horizontal platesconnected. together by vertical partitions,

said partitions forming open-ended channels, the upper set of partitionsbeing arranged 'at van` angle to the lower set of partitions, for thepurpose set forth.

3. `In combination lwith a Fourdrinier paper making machine, anattachment mounted in the pond back of the slices and,

extending entirely across the same and consisting of a plurality ofhorizontal plates connected together by vertical partitions, saidpartitions forming open-ended channels, the upper set of partitionsbeing arranged at an angle to the lower set of partitions, thepartitions at the ends of. the devicebeing adjustable as to angularity.

In testimony whereof I hereunto aliix my signature in the presence oftwo witnesses.

E. METGALF.

MARY E. LAwLnR.

